Online Parts Store › Phillips Machine Screw - Flat Head, 3/8"-16 x 3" Image 1 of 1 Phillips Machine Screw - Flat Head, 3/8"-16 x 3" $31.11 18-8 Stainless Steel. Add To Cart Added! 18-8 Stainless Steel. You Might Also Like Phillips Tapping Screw - Pan Head, #10 x 1" $29.03 Phillips Tapping Screw - Pan Head, #14 x 3" $61.60 Socket Set Screw 10-24 x 1/4" $22.63 Phillips Tapping Screws - Flat Head, #14 x 1-1/4" $25.76 Seachoice 01007 Lock Washer, #10 $10.77